Using the digits 1 to 9, the number 4396 can be written as the product of two numbers. Can you find the factors?
How many winning lines can you make in a three-dimensional version of noughts and crosses?
See if you can anticipate successive 'generations' of the two animals shown here.
Can you recreate these designs? What are the basic units? What movement is required between each unit? Some elegant use of procedures will help - variables not essential.
Caroline and James pick sets of five numbers. Charlie tries to find three that add together to make a multiple of three. Can they stop him?
If you can copy a network without lifting your pen off the paper and without drawing any line twice, then it is traversable. Decide which of these diagrams are traversable.
If you have a large supply of 3kg and 8kg weights, how many of each would you need for the average (mean) of the weights to be 6kg?
What's the largest volume of box you can make from a square of paper?
Can you do a little mathematical detective work to figure out which number has been wiped out?
